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[net-next,internal,2/2] mlxsw: spectrum_router: Return an error for routes added after abort

Message ID 20180424141744.9147-3-idosch@mellanox.com (mailing list archive)
State Accepted
Delegated to: Ido Schimmel
Headers show

Commit Message

Ido Schimmel April 24, 2018, 2:17 p.m. UTC 
We currently do not perform accounting in the driver and thus can't
reject routes before resources are exceeded.

However, in order to make users aware of the fact that routes are no
longer offloaded we can return an error for routes configured after the
abort mechanism was triggered.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c | 7 +++++++
 1 file changed, 7 insertions(+)
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Patch

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
index baea97560029..c9fce669cee4 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -5928,6 +5928,13 @@  static int mlxsw_sp_router_fib_event(struct notifier_block *nb,
 						     router->mlxsw_sp);
 		if (!err || info->extack)
 			return notifier_from_errno(err);
+		break;
+	case FIB_EVENT_ENTRY_ADD:
+		if (router->aborted) {
+			NL_SET_ERR_MSG_MOD(info->extack, "FIB offload was aborted. Not configuring route");
+			return notifier_from_errno(-EINVAL);
+		}
+		break;
 	}
 
 	fib_work = kzalloc(sizeof(*fib_work), GFP_ATOMIC);